Evolution of a metal: A photoemission study of the growth of Pd clusters

Abstract

Photoemission spectroscopy of Pd clusters embedded in a metal supported Xe matrix is used to monitor continuously the transition from atomic to bulk metallic behavior. We observe the evolution of both the Pd electronic states and the influence of the metal clusters on the initial-and final-state energy shifts of the Xe valence levels. The latter reflect the classical electrostatic equilibration of the metal Fermi levels and the screening response of the metal clusters, respectively.